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39
40#include "qvideooutputorientationhandler_p.h"
41
42#include <QGuiApplication>
43#include <QScreen>
44
45QT_BEGIN_NAMESPACE
46
47QVideoOutputOrientationHandler::QVideoOutputOrientationHandler(QObject *parent)
48 : QObject(parent)
49 , m_currentOrientation(0)
50{
51 QScreen *screen = QGuiApplication::primaryScreen();
52
53 // we want to be informed about all orientation changes
54 screen->setOrientationUpdateMask(Qt::PortraitOrientation|Qt::LandscapeOrientation
55 |Qt::InvertedPortraitOrientation|Qt::InvertedLandscapeOrientation);
56
57 connect(screen, SIGNAL(orientationChanged(Qt::ScreenOrientation)),
58 this, SLOT(screenOrientationChanged(Qt::ScreenOrientation)));
59
60 screenOrientationChanged(screen->orientation());
61}
62
63int QVideoOutputOrientationHandler::currentOrientation() const
64{
65 return m_currentOrientation;
66}
67
68void QVideoOutputOrientationHandler::screenOrientationChanged(Qt::ScreenOrientation orientation)
69{
70 const QScreen *screen = QGuiApplication::primaryScreen();
71
72 const int angle = (360 - screen->angleBetween(screen->nativeOrientation(), orientation)) % 360;
73
74 if (angle == m_currentOrientation)
75 return;
76
77 m_currentOrientation = angle;
78 emit orientationChanged(m_currentOrientation);
79}
80
81QT_END_NAMESPACE
82